Art of manufacturing ice



Jan. 8 1924.

H. FRIEDL ART MANUFACTURING ICE Filed 001;. 22 1923 Patented Jan. 8 1924.

1,480,255. uurrsu STATES PATENT OFFICE.

HERMAN FBIEDL, OF CHICAGO, ILLINOIS.

ART 01' MANUFACTURING ICE.

Application filed October 22, 1923. Serial n emoos,

To all whom it may concern:

Be it known that I, HERMAN FRIEDL, a citizen of the United States, residing at Chicago, in the county of Cook and State of c Illinois, haveinvented a new and useful Improvement in the Art of Manufacturing Ice, of which the following is a specification.

It is the common practice in the manufacture 'of ice to place the cans containing the water, from which the ice is to be formed, in a refrigerating. bath, as for example brine, the tem eratureof which is reduced to the desire degree for producing the refrigerating effect by subjecting it to a refrigerating medium. v

The water in the cans is frozen from-the bottom and the sides upwardly, the water last to freeze being, at the-top'portion, in the form-of a downwardly-tapering body surrounded-by ice. It has been found in practice-that according to the methods hithertoemployed itrequires approximately eight hours to freeze this remamm body of water, due tothe fact that: the refrlgeratmg brine is at substantially the same level as the 5 top ofthe ice whenall the water in the 'can isfrozen. v I have discovered that-by subjecting the water in the can, to be formed into the ice {cake, to a refrigerating bath,'the level of which extends tosuch a height relative to the water in the can that when the water is frozen the top of the ice cake extends a sub- .stantial distance below the level of, the re 'frigerating bath a solid cake of ice may be formed. in very much less time than in acccrdance with the practice heretofore .em-

' ployed, thereby greatly reducing thecost of manufacturing ice. i @zReferring to the accompanying drawing, the figure therein shown illustrates, by a view in vertical sectional elevation one end of a brine tank and one of the icecans immersed therein, the arrangement shown being suitable for practicing my improved method.

In the apparatus shown, thebrine tank is represented at 1, this tank being of any suitable construction and which, in practice,

would preferably be of such proportions as to be adapted to receive pluralities of rows of cans, one of which is represented at 2,

in which the ice is to be formed. As shown,

and in accordance with structures of this character as commonly provided, the ice cans are introducible into, and withdrawable from, the bath of refrigerating liquid 3, such as refrigerated brine, through the upper closure-equipped openings 4 in the top of the tank 1, one of these openings only being shown.

In the'manufacture of the ice the can 2 is filled with water from which the ice is to be formed, of such an amount that when the water is frozensolid throughout its extent, the top of the block of ice therein produced will extend a substantial distance below the level of the refrigerating brine 3 and preferably a distance below the level of the refrigerating brine substantially not less than one-half of the width of the can, the width referred to being the shorter dimension crosswise of thecanwhere the can is of oblong shape in cross section; For commercial reasons, it is further preferred that the amount of water chargedinto the can be such that the top of the block of ice will extend below the level'of the refrigerating brine a distance substantially equal to form about one-half to about three-quarters of the width of the can, and more preferably that this distance be about three-quarters ofthe width of the can. In the particular arrangement shown, the dotted line 5 illustrates, by way of example, charged into the can in accordance with the preferred manner of practicing my invention, and the full line 6 representsthe upper surface of the completely-formed ice-block.

The effect of encircling the can with the refrigerating medium above the level .to which the ice when formed extends, in addition to encircling the can throughout that 7 portion thereof at which the formed ice-cake extends, is that the air in the up er part of the can is refrigerated, thereby orcing upward and out of the can the warm air therein, with the result of very greatly expediting the formation of a-solid can.

It has been, found that by ment of the method described herein it is possible to manufacture cakes of ice of any. given dimensions in a much shorter length of time (without corresponding increase of cost) than 'is required to produce an ice-cake of the same dimensions in accordance with methods pDi ions! y employed; and also that merely by slightly deepening the bath of refrigerant and the cans, in an existing ice lant employing old methods, more ice cau be produced in a. given lengthof time.

the level of the Water the em ployblock of ice in the extending upwardly the side walls of the tank and cans, substantially one-half of the width of the cans and charging into the tank sufficient re frigerant to raiseits level. a distance corre-' sponding to the addition made to the side walls of thecharging 400 pounds of water intocach can, a greater quantit of. ice is produced than could be produce -in the-plant'constructed and operated ill-,flCCQl'dflllCG with prior practice. This result is produced for the reason that the upper levelgof the water in the cans is always so far below 'thelevel-of the'refrigcrating bath that,rapid-refrigeration takes place up to the top 0 the body of water and without the formation of a cup shaped open in in the topof the ice-cake. %Vhere the cans used iare'of the same general construction as now commonly provided, such charactei' of ably employed in pr acticing my invention, the charging of the same with the preferred amount of water, as abovestated, would not cause the charged. cans to be of .suiiicient weight to sink into the-refrigerating bath the desired distance level to beat the desired elevation .above re-' ferred to. It is thus jnecessary to augment the combined weight of the can and their contents, and this may be accomplished in any desirable. way, wcightinf the cans lmmerse by gravity, or, if desired the cans may be made lighter and forced downwardly to the desired osition,'in which position they may be held y any desirable means, as,'for example, by means of pins, one of which is represented at 7, which are adapted to be introduced into opening 8 in the. depending beams 9 of the top of the brine tank and' at asfor example .by .so

their inner ends overl each a distance as short-as,-

ticingof wish to-be tank and cans. as stated,-and

' frozen thefto' crating bath; cans benig prefer for causing'the water which consists that they will become. in the bath to the desired degree f the upper edges of the cans, or, if desire ,1 anysuitable catch mechanism for this purpose may be provided.-

Q While-I have illustrated anddescribed a particular apparatus adapted for the pracmy'improved method, I do not thereto as'the'methodmay'be practiced in other ways without departing from the Spirit Of my invention,

at'Iclaimas new; and desire to secure by; Letters Patent; is z" "1. The method of manufacturing ice,

understood'as intending to limit it whichconsistsin subjecting the receptacle ii -which the water is to be frozen to a refriger'atin bath the level of which extends to such ai eight relative to the water in'the receptacle that when all of the water is of the ice cake is a substantial distance elow the level of the refrig- '2. The method T of manufacturing ice,

which "consists in subjecting the receptacle in whichthe water is to be frozen to a refrigeratin' bath the level" of which extends to such a eight relative to the water in the receptacle that when all of the water is frozen the top of the ice cake is below the 'levelof the refrigerating bath a distance substantiallyn'ot less? than one-half the width of the receptacle.

3. The method of manufacturing ice,

level-of-the refrigerating bath'a distance substantially equal'to from about one-half in subjecting the receptacle 1n wh1ch,jthe water is to be frozen to a. rlgerating bath-the level of which exten s to about three-quarters of the width of the receptacle;

HERMAN FRIEDT, 

